During the 2010 NBAA Annual Meeting & Convention last month, we came across too many updated aircraft with too few days to discuss them on here. This week we will look back on some of the developments announced during the business aviation event that were not discussed here last month.

Today we look at the Beechcraft King Air 250, unveiled on the day before the convention officially kicked off. Aviation International News reported last week that the King Air 250 will be the first turboprop aircraft to feature the composite Hartzell 4-blade ASC-II.

Hartzell says the propeller, also unveiled at the convention, reduces aircraft weight without taking away from strength or durability.

The 93-inch diameter blade is being considered for other aircraft, AIN reports, though Hartzell has yet to announce any of these formally. The blade also will fit late-model King Air 200s.

The King Air 250, according to a statement from Hawker Beechcraft, also includes BLR Aerospace winglets and engine induction modifications to boost performance. It is modified from a King Air B200 GT.

The company says the aircraft will outperform all other King Air B200s on takeoff by 400 feet or more. (Sea level takeoff over a 50-foot obstacle at max gross weight is 2,111 feet, according to the statement.)

“The shorter runway capability found in the King Air 250 provides our customers access to more than 1,100 airports that were previously unavailable to them, allowing them to spend less travel time door-to-door by flying closer to their final destinations,” said Shawn Vick, an executive vice president with the company.

The King Air 250 should see its first deliveries during the second quarter of 2011, the company said.